diff options
Diffstat (limited to 'arch/um')
28 files changed, 389 insertions, 251 deletions
diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 05fbb20..76e85bb 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -57,20 +57,6 @@ config STATIC_LINK chroot, and you disable CONFIG_MODE_TT, you probably want to say Y here. -config HOST_2G_2G - bool "2G/2G host address space split" - default n - depends on MODE_TT - help - This is needed when the host on which you run has a 2G/2G memory - split, instead of the customary 3G/1G. - - Note that to enable such a host - configuration, which makes sense only in some cases, you need special - host patches. - - So, if you do not know what to do here, say 'N'. - config KERNEL_HALF_GIGS int "Kernel address space size (in .5G units)" default "1" diff --git a/arch/um/Kconfig.i386 b/arch/um/Kconfig.i386 index 85e6a55..f6eb72d 100644 --- a/arch/um/Kconfig.i386 +++ b/arch/um/Kconfig.i386 @@ -16,6 +16,19 @@ config SEMAPHORE_SLEEPERS bool default y +config HOST_2G_2G + bool "2G/2G host address space split" + default n + help + This is needed when the host on which you run has a 2G/2G memory + split, instead of the customary 3G/1G. + + Note that to enable such a host + configuration, which makes sense only in some cases, you need special + host patches. + + So, if you do not know what to do here, say 'N'. + config TOP_ADDR hex default 0xc0000000 if !HOST_2G_2G @@ -35,11 +48,13 @@ config 3_LEVEL_PGTABLES config STUB_CODE hex - default 0xbfffe000 + default 0xbfffe000 if !HOST_2G_2G + default 0x7fffe000 if HOST_2G_2G config STUB_DATA hex - default 0xbffff000 + default 0xbffff000 if !HOST_2G_2G + default 0x7ffff000 if HOST_2G_2G config STUB_START hex diff --git a/arch/um/Makefile b/arch/um/Makefile index a508e7a..f6ad832 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -96,7 +96,8 @@ PHONY += linux all: linux linux: vmlinux - ln -f $< $@ + @echo ' LINK $@' + $(Q)ln -f $< $@ define archhelp echo '* linux - Binary kernel image (./linux) - for backward' @@ -117,6 +118,10 @@ prepare: $(ARCH_DIR)/include/kern_constants.h LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib +CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \ + $(call cc-option, -fno-stack-protector,) \ + $(call cc-option, -fno-stack-protector-all,) + CPP_MODE-$(CONFIG_MODE_TT) := -DMODE_TT CONFIG_KERNEL_STACK_ORDER ?= 2 STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] ) @@ -203,8 +208,8 @@ endef $(ARCH_DIR)/include/uml-config.h : include/linux/autoconf.h $(call filechk,umlconfig) -$(ARCH_DIR)/user-offsets.s: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.c - $(CC) $(USER_CFLAGS) -S -o $@ $< +$(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s: FORCE + $(Q)$(MAKE) $(build)=$(ARCH_DIR)/sys-$(SUBARCH) $@ define filechk_gen-asm-offsets (set -e; \ @@ -219,13 +224,11 @@ define filechk_gen-asm-offsets echo ""; ) endef -$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/user-offsets.s +$(ARCH_DIR)/include/user_constants.h: $(ARCH_DIR)/sys-$(SUBARCH)/user-offsets.s $(call filechk,gen-asm-offsets) -CLEAN_FILES += $(ARCH_DIR)/user-offsets.s - $(ARCH_DIR)/include/kern_constants.h: $(objtree)/$(ARCH_DIR)/include @echo ' SYMLINK $@' - $(Q) ln -sf ../../../include/asm-um/asm-offsets.h $@ + $(Q)ln -sf ../../../include/asm-um/asm-offsets.h $@ -export SUBARCH USER_CFLAGS OS +export SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386 index 7a0e04e..b65ca11 100644 --- a/arch/um/Makefile-i386 +++ b/arch/um/Makefile-i386 @@ -33,5 +33,9 @@ include $(srctree)/arch/i386/Makefile.cpu # prevent gcc from keeping the stack 16 byte aligned. Taken from i386. cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) +# Prevent sprintf in nfsd from being converted to strcpy and resulting in +# an unresolved reference. +cflags-y += -ffreestanding + CFLAGS += $(cflags-y) USER_CFLAGS += $(cflags-y) diff --git a/arch/um/defconfig b/arch/um/defconfig index 80d30d1..402a74d 100644 --- a/arch/um/defconfig +++ b/arch/um/defconfig @@ -1,14 +1,13 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.12-rc6-mm1 -# Tue Jun 14 18:22:21 2005 +# Linux kernel version: 2.6.17-rc3 +# Fri Apr 28 09:31:20 2006 # CONFIG_GENERIC_HARDIRQS=y CONFIG_UML=y CONFIG_MMU=y -CONFIG_UID16=y -CONFIG_RWSEM_GENERIC_SPINLOCK=y CONFIG_GENERIC_CALIBRATE_DELAY=y +CONFIG_IRQ_RELEASE_METHOD=y # # UML-specific options @@ -16,8 +15,50 @@ CONFIG_GENERIC_CALIBRATE_DELAY=y # CONFIG_MODE_TT is not set # CONFIG_STATIC_LINK is not set CONFIG_MODE_SKAS=y + +# +# Host processor type and features +# +# CONFIG_M386 is not set +# CONFIG_M486 is not set +# CONFIG_M586 is not set +# CONFIG_M586TSC is not set +# CONFIG_M586MMX is not set +CONFIG_M686=y +# CONFIG_MPENTIUMII is not set +# CONFIG_MPENTIUMIII is not set +# CONFIG_MPENTIUMM is not set +# CONFIG_MPENTIUM4 is not set +# CONFIG_MK6 is not set +# CONFIG_MK7 is not set +# CONFIG_MK8 is not set +# CONFIG_MCRUSOE is not set +# CONFIG_MEFFICEON is not set +# CONFIG_MWINCHIPC6 is not set +# CONFIG_MWINCHIP2 is not set +# CONFIG_MWINCHIP3D is not set +# CONFIG_MGEODEGX1 is not set +# CONFIG_MGEODE_LX is not set +# CONFIG_MCYRIXIII is not set +# CONFIG_MVIAC3_2 is not set +# CONFIG_X86_GENERIC is not set +CONFIG_X86_CMPXCHG=y +CONFIG_X86_XADD=y +CONFIG_X86_L1_CACHE_SHIFT=5 +CONFIG_RWSEM_XCHGADD_ALGORITHM=y +CONFIG_X86_PPRO_FENCE=y +CONFIG_X86_WP_WORKS_OK=y +CONFIG_X86_INVLPG=y +CONFIG_X86_BSWAP=y +CONFIG_X86_POPAD_OK=y +CONFIG_X86_CMPXCHG64=y +CONFIG_X86_GOOD_APIC=y +CONFIG_X86_USE_PPRO_CHECKSUM=y +CONFIG_X86_TSC=y CONFIG_UML_X86=y # CONFIG_64BIT is not set +CONFIG_SEMAPHORE_SLEEPERS=y +# CONFIG_HOST_2G_2G is not set CONFIG_TOP_ADDR=0xc0000000 # CONFIG_3_LEVEL_PGTABLES is not set CONFIG_STUB_CODE=0xbfffe000 @@ -25,22 +66,24 @@ CONFIG_STUB_DATA=0xbffff000 CONFIG_STUB_START=0xbfffe000 CONFIG_ARCH_HAS_SC_SIGNALS=y CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA=y +CONFIG_GENERIC_HWEIGHT=y CONFIG_SELECT_MEMORY_MODEL=y CONFIG_FLATMEM_MANUAL=y # CONFIG_DISCONTIGMEM_MANUAL is not set # CONFIG_SPARSEMEM_MANUAL is not set CONFIG_FLATMEM=y CONFIG_FLAT_NODE_MEM_MAP=y +# CONFIG_SPARSEMEM_STATIC is not set +CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_LD_SCRIPT_DYN=y CONFIG_NET=y CONFIG_BINFMT_ELF=y CONFIG_BINFMT_MISC=m # CONFIG_HOSTFS is not set +# CONFIG_HPPFS is not set CONFIG_MCONSOLE=y # CONFIG_MAGIC_SYSRQ is not set -# CONFIG_HOST_2G_2G is not set CONFIG_NEST_LEVEL=0 -CONFIG_KERNEL_HALF_GIGS=1 # CONFIG_HIGHMEM is not set CONFIG_KERNEL_STACK_ORDER=2 CONFIG_UML_REAL_TIME_CLOCK=y @@ -49,7 +92,6 @@ CONFIG_UML_REAL_TIME_CLOCK=y # Code maturity level options # CONFIG_EXPERIMENTAL=y -CONFIG_CLEAN_COMPILE=y CONFIG_BROKEN_ON_SMP=y CONFIG_INIT_ENV_ARG_LIMIT=32 @@ -57,6 +99,7 @@ CONFIG_INIT_ENV_ARG_LIMIT=32 # General setup # CONFIG_LOCALVERSION="" +CONFIG_LOCALVERSION_AUTO=y CONFIG_SWAP=y CONFIG_SYSVIPC=y CONFIG_POSIX_MQUEUE=y @@ -64,26 +107,28 @@ CONFIG_BSD_PROCESS_ACCT=y # CONFIG_BSD_PROCESS_ACCT_V3 is not set CONFIG_SYSCTL=y # CONFIG_AUDIT is not set -# CONFIG_HOTPLUG is not set -CONFIG_KOBJECT_UEVENT=y CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y +# CONFIG_RELAY is not set +CONFIG_INITRAMFS_SOURCE="" +CONFIG_UID16=y +CONFIG_CC_OPTIMIZE_FOR_SIZE=y # CONFIG_EMBEDDED is not set CONFIG_KALLSYMS=y # CONFIG_KALLSYMS_ALL is not set CONFIG_KALLSYMS_EXTRA_PASS=y +CONFIG_HOTPLUG=y CONFIG_PRINTK=y CONFIG_BUG=y +CONFIG_ELF_CORE=y CONFIG_BASE_FULL=y CONFIG_FUTEX=y CONFIG_EPOLL=y CONFIG_SHMEM=y -CONFIG_CC_ALIGN_FUNCTIONS=0 -CONFIG_CC_ALIGN_LABELS=0 -CONFIG_CC_ALIGN_LOOPS=0 -CONFIG_CC_ALIGN_JUMPS=0 +CONFIG_SLAB=y # CONFIG_TINY_SHMEM is not set CONFIG_BASE_SMALL=0 +# CONFIG_SLOB is not set # # Loadable module support @@ -91,18 +136,43 @@ CONFIG_BASE_SMALL=0 CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y # CONFIG_MODULE_FORCE_UNLOAD is not set -CONFIG_OBSOLETE_MODPARM=y # CONFIG_MODVERSIONS is not set # CONFIG_MODULE_SRCVERSION_ALL is not set CONFIG_KMOD=y # -# Generic Driver Options +# Block layer # -CONFIG_STANDALONE=y -CONFIG_PREVENT_FIRMWARE_BUILD=y -# CONFIG_FW_LOADER is not set -# CONFIG_DEBUG_DRIVER is not set +# CONFIG_LBD is not set +# CONFIG_BLK_DEV_IO_TRACE is not set +# CONFIG_LSF is not set + +# +# IO Schedulers +# +CONFIG_IOSCHED_NOOP=y +CONFIG_IOSCHED_AS=y +CONFIG_IOSCHED_DEADLINE=y +CONFIG_IOSCHED_CFQ=y +CONFIG_DEFAULT_AS=y +# CONFIG_DEFAULT_DEADLINE is not set +# CONFIG_DEFAULT_CFQ is not set +# CONFIG_DEFAULT_NOOP is not set +CONFIG_DEFAULT_IOSCHED="anticipatory" + +# +# Block devices +# +CONFIG_BLK_DEV_UBD=y +# CONFIG_BLK_DEV_UBD_SYNC is not set +CONFIG_BLK_DEV_COW_COMMON=y +# CONFIG_MMAPPER is not set +CONFIG_BLK_DEV_LOOP=m +# CONFIG_BLK_DEV_CRYPTOLOOP is not set +CONFIG_BLK_DEV_NBD=m +# CONFIG_BLK_DEV_RAM is not set +# CONFIG_BLK_DEV_INITRD is not set +# CONFIG_ATA_OVER_ETH is not set # # Character Devices @@ -127,50 +197,23 @@ CONFIG_UML_SOUND=m CONFIG_SOUND=m CONFIG_HOSTAUDIO=m CONFIG_UML_RANDOM=y -# CONFIG_MMAPPER is not set - -# -# Block devices -# -CONFIG_BLK_DEV_UBD=y -CONFIG_BLK_DEV_UBD_SYNC=y -CONFIG_BLK_DEV_COW_COMMON=y -CONFIG_BLK_DEV_LOOP=m -# CONFIG_BLK_DEV_CRYPTOLOOP is not set -CONFIG_BLK_DEV_NBD=m -# CONFIG_BLK_DEV_RAM is not set -CONFIG_BLK_DEV_RAM_COUNT=16 -CONFIG_INITRAMFS_SOURCE="" -# CONFIG_LBD is not set - -# -# IO Schedulers -# -CONFIG_IOSCHED_NOOP=y -CONFIG_IOSCHED_AS=y -CONFIG_IOSCHED_DEADLINE=y -CONFIG_IOSCHED_CFQ=y -# CONFIG_ATA_OVER_ETH is not set -CONFIG_NETDEVICES=y # -# UML Network Devices +# Generic Driver Options # -CONFIG_UML_NET=y -CONFIG_UML_NET_ETHERTAP=y -CONFIG_UML_NET_TUNTAP=y -CONFIG_UML_NET_SLIP=y -CONFIG_UML_NET_DAEMON=y -CONFIG_UML_NET_MCAST=y -CONFIG_UML_NET_SLIRP=y +CONFIG_STANDALONE=y +CONFIG_PREVENT_FIRMWARE_BUILD=y +# CONFIG_FW_LOADER is not set +# CONFIG_DEBUG_DRIVER is not set # -# Networking support +# Networking # # # Networking options # +# CONFIG_NETDEBUG is not set CONFIG_PACKET=y CONFIG_PACKET_MMAP=y CONFIG_UNIX=y @@ -178,6 +221,7 @@ CONFIG_UNIX=y CONFIG_INET=y # CONFIG_IP_MULTICAST is not set # CONFIG_IP_ADVANCED_ROUTER is not set +CONFIG_IP_FIB_HASH=y # CONFIG_IP_PNP is not set # CONFIG_NET_IPIP is not set # CONFIG_NET_IPGRE is not set @@ -186,27 +230,31 @@ CONFIG_INET=y # CONFIG_INET_AH is not set # CONFIG_INET_ESP is not set # CONFIG_INET_IPCOMP is not set +# CONFIG_INET_XFRM_TUNNEL is not set # CONFIG_INET_TUNNEL is not set -CONFIG_IP_TCPDIAG=y -# CONFIG_IP_TCPDIAG_IPV6 is not set - -# -# TCP congestion control -# +CONFIG_INET_DIAG=y +CONFIG_INET_TCP_DIAG=y +# CONFIG_TCP_CONG_ADVANCED is not set CONFIG_TCP_CONG_BIC=y -CONFIG_TCP_CONG_WESTWOOD=y -CONFIG_TCP_CONG_HTCP=y -# CONFIG_TCP_CONG_HSTCP is not set -# CONFIG_TCP_CONG_HYBLA is not set -# CONFIG_TCP_CONG_VEGAS is not set -# CONFIG_TCP_CONG_SCALABLE is not set # CONFIG_IPV6 is not set +# CONFIG_INET6_XFRM_TUNNEL is not set +# CONFIG_INET6_TUNNEL is not set # CONFIG_NETFILTER is not set # +# DCCP Configuration (EXPERIMENTAL) +# +# CONFIG_IP_DCCP is not set + +# # SCTP Configuration (EXPERIMENTAL) # # CONFIG_IP_SCTP is not set + +# +# TIPC Configuration (EXPERIMENTAL) +# +# CONFIG_TIPC is not set # CONFIG_ATM is not set # CONFIG_BRIDGE is not set # CONFIG_VLAN_8021Q is not set @@ -224,27 +272,47 @@ CONFIG_TCP_CONG_HTCP=y # QoS and/or fair queueing # # CONFIG_NET_SCHED is not set -# CONFIG_NET_CLS_ROUTE is not set # # Network testing # # CONFIG_NET_PKTGEN is not set -# CONFIG_KGDBOE is not set -# CONFIG_NETPOLL is not set -# CONFIG_NETPOLL_RX is not set -# CONFIG_NETPOLL_TRAP is not set -# CONFIG_NET_POLL_CONTROLLER is not set # CONFIG_HAMRADIO is not set # CONFIG_IRDA is not set # CONFIG_BT is not set # CONFIG_IEEE80211 is not set + +# +# UML Network Devices +# +CONFIG_UML_NET=y +CONFIG_UML_NET_ETHERTAP=y +CONFIG_UML_NET_TUNTAP=y +CONFIG_UML_NET_SLIP=y +CONFIG_UML_NET_DAEMON=y +CONFIG_UML_NET_MCAST=y +# CONFIG_UML_NET_PCAP is not set +CONFIG_UML_NET_SLIRP=y + +# +# Network device support +# +CONFIG_NETDEVICES=y CONFIG_DUMMY=m # CONFIG_BONDING is not set # CONFIG_EQUALIZER is not set CONFIG_TUN=m # +# PHY device support +# + +# +# Wireless LAN (non-hamradio) +# +# CONFIG_NET_RADIO is not set + +# # Wan interfaces # # CONFIG_WAN is not set @@ -263,6 +331,13 @@ CONFIG_SLIP=m # CONFIG_SLIP_MODE_SLIP6 is not set # CONFIG_SHAPER is not set # CONFIG_NETCONSOLE is not set +# CONFIG_NETPOLL is not set +# CONFIG_NET_POLL_CONTROLLER is not set + +# +# Connector - unified userspace <-> kernelspace linker +# +# CONFIG_CONNECTOR is not set # # File systems @@ -274,17 +349,14 @@ CONFIG_EXT3_FS=y # CONFIG_EXT3_FS_XATTR is not set CONFIG_JBD=y # CONFIG_JBD_DEBUG is not set -# CONFIG_REISER4_FS is not set CONFIG_REISERFS_FS=y # CONFIG_REISERFS_CHECK is not set # CONFIG_REISERFS_PROC_INFO is not set # CONFIG_REISERFS_FS_XATTR is not set # CONFIG_JFS_FS is not set - -# -# XFS support -# +# CONFIG_FS_POSIX_ACL is not set # CONFIG_XFS_FS is not set +# CONFIG_OCFS2_FS is not set # CONFIG_MINIX_FS is not set # CONFIG_ROMFS_FS is not set CONFIG_INOTIFY=y @@ -295,11 +367,6 @@ CONFIG_QUOTACTL=y CONFIG_DNOTIFY=y CONFIG_AUTOFS_FS=m CONFIG_AUTOFS4_FS=m - -# -# Caches -# -# CONFIG_FSCACHE is not set # CONFIG_FUSE_FS is not set # @@ -323,14 +390,10 @@ CONFIG_JOLIET=y CONFIG_PROC_FS=y CONFIG_PROC_KCORE=y CONFIG_SYSFS=y -# CONFIG_DEVFS_FS is not set -# CONFIG_DEVPTS_FS_XATTR is not set CONFIG_TMPFS=y -# CONFIG_TMPFS_XATTR is not set # CONFIG_HUGETLB_PAGE is not set CONFIG_RAMFS=y # CONFIG_CONFIGFS_FS is not set -# CONFIG_RELAYFS_FS is not set # # Miscellaneous filesystems @@ -430,6 +493,7 @@ CONFIG_NLS_DEFAULT="iso8859-1" # Library routines # # CONFIG_CRC_CCITT is not set +# CONFIG_CRC16 is not set CONFIG_CRC32=m # CONFIG_LIBCRC32C is not set @@ -448,12 +512,18 @@ CONFIG_LOG_BUF_SHIFT=14 CONFIG_DETECT_SOFTLOCKUP=y # CONFIG_SCHEDSTATS is not set CONFIG_DEBUG_SLAB=y +# CONFIG_DEBUG_SLAB_LEAK is not set +# CONFIG_DEBUG_MUTEXES is not set # CONFIG_DEBUG_SPINLOCK is not set # CONFIG_DEBUG_SPINLOCK_SLEEP is not set # CONFIG_DEBUG_KOBJECT is not set CONFIG_DEBUG_INFO=y # CONFIG_DEBUG_FS is not set +# CONFIG_DEBUG_VM is not set CONFIG_FRAME_POINTER=y +# CONFIG_UNWIND_INFO is not set +CONFIG_FORCED_INLINING=y +# CONFIG_RCU_TORTURE_TEST is not set # CONFIG_GPROF is not set # CONFIG_GCOV is not set # CONFIG_SYSCALL_DEBUG is not set diff --git a/arch/um/drivers/cow_user.c b/arch/um/drivers/cow_user.c index 6ab852b..0ec4052 100644 --- a/arch/um/drivers/cow_user.c +++ b/arch/um/drivers/cow_user.c @@ -100,7 +100,7 @@ struct cow_header_v3_broken { __u32 alignment; __u32 cow_format; char backing_file[PATH_LEN_V3]; -} __attribute__((packed)); +}; /* COW format definitions - for now, we have only the usual COW bitmap */ #define COW_BITMAP 0 diff --git a/arch/um/include/kern_util.h b/arch/um/include/kern_util.h index efa3d33..310980b 100644 --- a/arch/um/include/kern_util.h +++ b/arch/um/include/kern_util.h @@ -120,20 +120,11 @@ extern int is_syscall(unsigned long addr); extern void free_irq(unsigned int, void *); extern int cpu(void); +extern void time_init_kern(void); + /* Are we disallowed to sleep? Used to choose between GFP_KERNEL and GFP_ATOMIC. */ extern int __cant_sleep(void); extern void segv_handler(int sig, union uml_pt_regs *regs); extern void sigio_handler(int sig, union uml_pt_regs *regs); #endif - -/* - * Overrides for Emacs so that we follow Linus's tabbing style. - * Emacs will notice this stuff at the end of the file and automatically - * adjust the settings for this buffer only. This must remain at the end - * of the file. - * --------------------------------------------------------------------------- - * Local variables: - * c-file-style: "linux" - * End: - */ diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index c39ea3a..2ffda01 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -89,16 +89,18 @@ void sigio_handler(int sig, union uml_pt_regs *regs) struct irq_fd *irq_fd; int n; - if(smp_sigio_handler()) return; - while(1){ + if (smp_sigio_handler()) + return; + + while (1) { n = os_waiting_for_events(active_fds); if (n <= 0) { if(n == -EINTR) continue; else break; } - for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){ - if(irq_fd->current_events != 0){ + for (irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next) { + if (irq_fd->current_events != 0) { irq_fd->current_events = 0; do_IRQ(irq_fd->irq, regs); } @@ -110,19 +112,17 @@ void sigio_handler(int sig, union uml_pt_regs *regs) static void maybe_sigio_broken(int fd, int type) { - if(os_isatty(fd)){ - if((type == IRQ_WRITE) && !pty_output_sigio){ + if (os_isatty(fd)) { + if ((type == IRQ_WRITE) && !pty_output_sigio) { write_sigio_workaround(); add_sigio_fd(fd, 0); - } - else if((type == IRQ_READ) && !pty_close_sigio){ + } else if ((type == IRQ_READ) && !pty_close_sigio) { write_sigio_workaround(); add_sigio_fd(fd, 1); } } } - int activate_fd(int irq, int fd, int type, void *dev_id) { struct pollfd *tmp_pfd; @@ -132,16 +132,18 @@ int activate_fd(int irq, int fd, int type, void *dev_id) pid = os_getpid(); err = os_set_fd_async(fd, pid); - if(err < 0) + if (err < 0) goto out; new_fd = um_kmalloc(sizeof(*new_fd)); err = -ENOMEM; - if(new_fd == NULL) + if (new_fd == NULL) goto out; - if(type == IRQ_READ) events = UM_POLLIN | UM_POLLPRI; - else events = UM_POLLOUT; + if (type == IRQ_READ) + events = UM_POLLIN | UM_POLLPRI; + else + events = UM_POLLOUT; *new_fd = ((struct irq_fd) { .next = NULL, .id = dev_id, .fd = fd, @@ -165,8 +167,8 @@ int activate_fd(int irq, int fd, int type, void *dev_id) * a semaphore. */ flags = irq_lock(); - for(irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next){ - if((irq_fd->fd == fd) && (irq_fd->type == type)){ + for (irq_fd = active_fds; irq_fd != NULL; irq_fd = irq_fd->next) { + if ((irq_fd->fd == fd) && (irq_fd->type == type)) { printk("Registering fd %d twice\n", fd); printk("Irqs : %d, %d\n", irq_fd->irq, irq); printk("Ids : 0x%p, 0x%p\n", irq_fd->id, dev_id); @@ -175,13 +177,13 @@ int activate_fd(int irq, int fd, int type, void *dev_id) } /*-------------*/ - if(type == IRQ_WRITE) + if (type == IRQ_WRITE) fd = -1; tmp_pfd = NULL; n = 0; - while(1){ + while (1) { n = os_create_pollfd(fd, events, tmp_pfd, n); if (n == 0) break; @@ -198,10 +200,8 @@ int activate_fd(int irq, int fd, int type, void *dev_id) * then we free the buffer tmp_fds and try again. */ irq_unlock(flags); - if (tmp_pfd != NULL) { - kfree(tmp_pfd); - tmp_pfd = NULL; - } + kfree(tmp_pfd); + tmp_pfd = NULL; tmp_pfd = um_kmalloc(n); if (tmp_pfd == NULL) @@ -249,7 +249,7 @@ static int same_irq_and_dev(struct irq_fd *irq, void *d) { struct irq_and_dev *data = d; - return((irq->irq == data->irq) && (irq->id == data->dev)); + return ((irq->irq == data->irq) && (irq->id == data->dev)); } void free_irq_by_irq_and_dev(unsigned int irq, void *dev) @@ -262,7 +262,7 @@ void free_irq_by_irq_and_dev(unsigned int irq, void *dev) static int same_fd(struct irq_fd *irq, void *fd) { - return(irq->fd == *((int *) fd)); + return (irq->fd == *((int *)fd)); } void free_irq_by_fd(int fd) @@ -276,16 +276,17 @@ static struct irq_fd *find_irq_by_fd(int fd, int irqnum, int *index_out) int i = 0; int fdi; - for(irq=active_fds; irq != NULL; irq = irq->next){ - if((irq->fd == fd) && (irq->irq == irqnum)) break; + for (irq = active_fds; irq != NULL; irq = irq->next) { + if ((irq->fd == fd) && (irq->irq == irqnum)) + break; i++; } - if(irq == NULL){ + if (irq == NULL) { printk("find_irq_by_fd doesn't have descriptor %d\n", fd); goto out; } fdi = os_get_pollfd(i); - if((fdi != -1) && (fdi != fd)){ + if ((fdi != -1) && (fdi != fd)) { printk("find_irq_by_fd - mismatch between active_fds and " "pollfds, fd %d vs %d, need %d\n", irq->fd, fdi, fd); @@ -294,7 +295,7 @@ static struct irq_fd *find_irq_by_fd(int fd, int irqnum, int *index_out) } *index_out = i; out: - return(irq); + return irq; } void reactivate_fd(int fd, int irqnum) @@ -305,7 +306,7 @@ void reactivate_fd(int fd, int irqnum) flags = irq_lock(); irq = find_irq_by_fd(fd, irqnum, &i); - if(irq == NULL){ + if (irq == NULL) { irq_unlock(flags); return; } @@ -326,7 +327,7 @@ void deactivate_fd(int fd, int irqnum) flags = irq_lock(); irq = find_irq_by_fd(fd, irqnum, &i); - if(irq == NULL) + if (irq == NULL) goto out; os_set_pollfd(i, -1); out: @@ -338,15 +339,15 @@ int deactivate_all_fds(void) struct irq_fd *irq; int err; - for(irq=active_fds;irq != NULL;irq = irq->next){ + for (irq = active_fds; irq != NULL; irq = irq->next) { err = os_clear_fd_async(irq->fd); - if(err) - return(err); + if (err) + return err; } /* If there is a signal already queued, after unblocking ignore it */ os_set_ioignore(); - return(0); + return 0; } void forward_interrupts(int pid) @@ -356,9 +357,9 @@ void forward_interrupts(int pid) int err; flags = irq_lock(); - for(irq=active_fds;irq != NULL;irq = irq->next){ + for (irq = active_fds; irq != NULL; irq = irq->next) { err = os_set_owner(irq->fd, pid); - if(err < 0){ + if (err < 0) { /* XXX Just remove the irq rather than * print out an infinite stream of these */ @@ -379,7 +380,7 @@ void forward_interrupts(int pid) unsigned int do_IRQ(int irq, union uml_pt_regs *regs) { irq_enter(); - __do_IRQ(irq, (struct pt_regs *) regs); + __do_IRQ(irq, (struct pt_regs *)regs); irq_exit(); return 1; } @@ -392,12 +393,12 @@ int um_request_irq(unsigned int irq, int fd, int type, int err; err = request_irq(irq, handler, irqflags, devname, dev_id); - if(err) - return(err); + if (err) + return err; - if(fd != -1) + if (fd != -1) err = activate_fd(irq, fd, type, dev_id); - return(err); + return err; } EXPORT_SYMBOL(um_request_irq); EXPORT_SYMBOL(reactivate_fd); @@ -409,7 +410,7 @@ unsigned long irq_lock(void) unsigned long flags; spin_lock_irqsave(&irq_spinlock, flags); - return(flags); + return flags; } void irq_unlock(unsigned long flags) @@ -452,7 +453,7 @@ void __init init_IRQ(void) irq_desc[TIMER_IRQ].depth = 1; irq_desc[TIMER_IRQ].handler = &SIGVTALRM_irq_type; enable_irq(TIMER_IRQ); - for(i=1;i<NR_IRQS;i++){ + for (i = 1; i < NR_IRQS; i++) { irq_desc[i].status = IRQ_DISABLED; irq_desc[i].action = NULL; irq_desc[i].depth = 1; @@ -467,7 +468,7 @@ int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *, int fds[2], err; err = os_pipe(fds, 1, 1); - if(err){ + if (err) { printk("init_aio_irq - os_pipe failed, err = %d\n", -err); goto out; } @@ -475,7 +476,7 @@ int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *, err = um_request_irq(irq, fds[0], IRQ_READ, handler, SA_INTERRUPT | SA_SAMPLE_RANDOM, name, (void *) (long) fds[0]); - if(err){ + if (err) { printk("init_aio_irq - : um_request_irq failed, err = %d\n", err); goto out_close; @@ -488,5 +489,5 @@ int init_aio_irq(int irq, char *name, irqreturn_t (*handler)(int, void *, os_close_file(fds[0]); os_close_file(fds[1]); out: - return(err); + return err; } diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c index 73c741d..166cb09 100644 --- a/arch/um/kernel/physmem.c +++ b/arch/um/kernel/physmem.c @@ -407,6 +407,8 @@ unsigned long find_iomem(char *driver, unsigned long *len_out) *len_out = region->size; return(region->virt); } + + region = region->next; } return(0); diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c index 60d2eda..9a77fb3 100644 --- a/arch/um/kernel/ptrace.c +++ b/arch/um/kernel/ptrace.c @@ -275,15 +275,13 @@ void syscall_trace(union uml_pt_regs *regs, int entryexit) if (unlikely(current->audit_context)) { if (!entryexit) - audit_syscall_entry(current, - HOST_AUDIT_ARCH, + audit_syscall_entry(HOST_AUDIT_ARCH, UPT_SYSCALL_NR(regs), UPT_SYSCALL_ARG1(regs), UPT_SYSCALL_ARG2(regs), UPT_SYSCALL_ARG3(regs), UPT_SYSCALL_ARG4(regs)); - else audit_syscall_exit(current, - AUDITSC_RESULT(UPT_SYSCALL_RET(regs)), + else audit_syscall_exit(AUDITSC_RESULT(UPT_SYSCALL_RET(regs)), UPT_SYSCALL_RET(regs)); } diff --git a/arch/um/kernel/skas/Makefile b/arch/um/kernel/skas/Makefile index 57181a9..ea3a8e4 100644 --- a/arch/um/kernel/skas/Makefile +++ b/arch/um/kernel/skas/Makefile @@ -6,9 +6,11 @@ obj-y := clone.o exec_kern.o mem.o mmu.o process_kern.o \ syscall.o tlb.o uaccess.o -USER_OBJS := clone.o +# clone.o is in the stub, so it can't be built with profiling +# GCC hardened also auto-enables -fpic, but we need %ebx so it can't work -> +# disable it -include arch/um/scripts/Makefile.rules +CFLAGS_clone.o := $(CFLAGS_NO_HARDENING) +UNPROFILE_OBJS := clone.o -# clone.o is in the stub, so it can't be built with profiling -$(obj)/clone.o : c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS)) +include arch/um/scripts/Makefile.rules diff --git a/arch/um/kernel/time_kern.c b/arch/um/kernel/time_kern.c index 3c7626c..86f51d0 100644 --- a/arch/um/kernel/time_kern.c +++ b/arch/um/kernel/time_kern.c @@ -84,6 +84,16 @@ void timer_irq(union uml_pt_regs *regs) } } + +void time_init_kern(void) +{ + unsigned long long nsecs; + + nsecs = os_nsecs(); + set_normalized_timespec(&wall_to_monotonic, -nsecs / BILLION, + -nsecs % BILLION); +} + void do_boot_timer_handler(struct sigcontext * sc) { struct pt_regs regs; @@ -209,4 +219,4 @@ int __init timer_init(void) return(0); } -__initcall(timer_init); +arch_initcall(timer_init); diff --git a/arch/um/os-Linux/file.c b/arch/um/os-Linux/file.c index 3bd10de..0925133 100644 --- a/arch/um/os-Linux/file.c +++ b/arch/um/os-Linux/file.c @@ -171,7 +171,7 @@ int os_sigio_async(int master, int slave) flags = fcntl(master, F_GETFL); if(flags < 0) - return errno; + return -errno; if((fcntl(master, F_SETFL, flags | O_NONBLOCK | O_ASYNC) < 0) || (fcntl(master, F_SETOWN, os_getpid()) < 0)) diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c index e599be4..3788d45 100644 --- a/arch/um/os-Linux/irq.c +++ b/arch/um/os-Linux/irq.c @@ -29,21 +29,21 @@ int os_waiting_for_events(struct irq_fd *active_fds) int i, n, err; n = poll(pollfds, pollfds_num, 0); - if(n < 0){ + if (n < 0) { err = -errno; - if(errno != EINTR) + if (errno != EINTR) printk("sigio_handler: os_waiting_for_events:" " poll returned %d, errno = %d\n", n, errno); return err; } - if(n == 0) + if (n == 0) return 0; irq_fd = active_fds; - for(i = 0; i < pollfds_num; i++){ - if(pollfds[i].revents != 0){ + for (i = 0; i < pollfds_num; i++) { + if (pollfds[i].revents != 0) { irq_fd->current_events = pollfds[i].revents; pollfds[i].fd = -1; } @@ -54,7 +54,7 @@ int os_waiting_for_events(struct irq_fd *active_fds) int os_isatty(int fd) { - return(isatty(fd)); + return isatty(fd); } int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds) @@ -65,7 +65,7 @@ int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds) return((pollfds_size + 1) * sizeof(pollfds[0])); } - if(pollfds != NULL){ + if (pollfds != NULL) { memcpy(tmp_pfd, pollfds, sizeof(pollfds[0]) * pollfds_size); /* remove old pollfds */ @@ -73,18 +73,15 @@ int os_create_pollfd(int fd, int events, void *tmp_pfd, int size_tmpfds) } pollfds = tmp_pfd; pollfds_size++; - } else { - /* remove not used tmp_pfd */ - if (tmp_pfd != NULL) - kfree(tmp_pfd); - } + } else + kfree(tmp_pfd); /* remove not used tmp_pfd */ - pollfds[pollfds_num] = ((struct pollfd) { .fd = fd, - .events = events, - .revents = 0 }); + pollfds[pollfds_num] = ((struct pollfd) { .fd = fd, + .events = events, + .revents = 0 }); pollfds_num++; - return(0); + return 0; } void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, @@ -94,11 +91,11 @@ void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, int i = 0; prev = &active_fds; - while(*prev != NULL){ - if((*test)(*prev, arg)){ + while (*prev != NULL) { + if ((*test)(*prev, arg)) { struct irq_fd *old_fd = *prev; - if((pollfds[i].fd != -1) && - (pollfds[i].fd != (*prev)->fd)){ + if ((pollfds[i].fd != -1) && + (pollfds[i].fd != (*prev)->fd)) { printk("os_free_irq_by_cb - mismatch between " "active_fds and pollfds, fd %d vs %d\n", (*prev)->fd, pollfds[i].fd); @@ -110,7 +107,6 @@ void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, /* This moves the *whole* array after pollfds[i] * (though it doesn't spot as such)! */ - memmove(&pollfds[i], &pollfds[i + 1], (pollfds_num - i) * sizeof(pollfds[0])); if(*last_irq_ptr2 == &old_fd->next) @@ -129,10 +125,9 @@ void os_free_irq_by_cb(int (*test)(struct irq_fd *, void *), void *arg, return; } - int os_get_pollfd(int i) { - return(pollfds[i].fd); + return pollfds[i].fd; } void os_set_pollfd(int i, int fd) @@ -151,8 +146,10 @@ void init_irq_signals(int on_sigstack) int flags; flags = on_sigstack ? SA_ONSTACK : 0; - if(timer_irq_inited) h = (__sighandler_t) alarm_handler; - else h = boot_timer_handler; + if (timer_irq_inited) + h = (__sighandler_t)alarm_handler; + else + h = boot_timer_handler; set_handler(SIGVTALRM, h, flags | SA_RESTART, SIGUSR1, SIGIO, SIGWINCH, SIGALRM, -1); diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index 2878e89..90912aa 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -59,7 +59,7 @@ static __init void do_uml_initcalls(void) initcall_t *call; call = &__uml_initcall_start; - while (call < &__uml_initcall_end){; + while (call < &__uml_initcall_end){ (*call)(); call++; } @@ -74,6 +74,34 @@ static void last_ditch_exit(int sig) exit(1); } +#define UML_LIB_PATH ":/usr/lib/uml" + +static void setup_env_path(void) +{ + char *new_path = NULL; + char *old_path = NULL; + int path_len = 0; + + old_path = getenv("PATH"); + /* if no PATH variable is set or it has an empty value + * just use the default + /usr/lib/uml + */ + if (!old_path || (path_len = strlen(old_path)) == 0) { + putenv("PATH=:/bin:/usr/bin/" UML_LIB_PATH); + return; + } + + /* append /usr/lib/uml to the existing path */ + path_len += strlen("PATH=" UML_LIB_PATH) + 1; + new_path = malloc(path_len); + if (!new_path) { + perror("coudn't malloc to set a new PATH"); + return; + } + snprintf(new_path, path_len, "PATH=%s" UML_LIB_PATH, old_path); + putenv(new_path); +} + extern int uml_exitcode; extern void scan_elf_aux( char **envp); @@ -114,6 +142,8 @@ int main(int argc, char **argv, char **envp) set_stklim(); + setup_env_path(); + new_argv = malloc((argc + 1) * sizeof(char *)); if(new_argv == NULL){ perror("Mallocing argv"); diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c index 3505f44..233be2f 100644 --- a/arch/um/os-Linux/process.c +++ b/arch/um/os-Linux/process.c @@ -206,29 +206,36 @@ int os_drop_memory(void *addr, int length) int can_drop_memory(void) { void *addr; - int fd; + int fd, ok = 0; printk("Checking host MADV_REMOVE support..."); fd = create_mem_file(UM_KERN_PAGE_SIZE); if(fd < 0){ printk("Creating test memory file failed, err = %d\n", -fd); - return 0; + goto out; } addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); if(addr == MAP_FAILED){ printk("Mapping test memory file failed, err = %d\n", -errno); - return 0; + goto out_close; } if(madvise(addr, UM_KERN_PAGE_SIZE, MADV_REMOVE) != 0){ printk("MADV_REMOVE failed, err = %d\n", -errno); - return 0; + goto out_unmap; } printk("OK\n"); - return 1; + ok = 1; + +out_unmap: + munmap(addr, UM_KERN_PAGE_SIZE); +out_close: + close(fd); +out: + return ok; } void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int)) diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 0776bc1..bd89c6b 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -344,12 +344,12 @@ int copy_context_skas0(unsigned long new_stack, int pid) err = ptrace_setregs(pid, regs); if(err < 0) panic("copy_context_skas0 : PTRACE_SETREGS failed, " - "pid = %d, errno = %d\n", pid, errno); + "pid = %d, errno = %d\n", pid, -err); err = ptrace_setfpregs(pid, fp_regs); if(err < 0) panic("copy_context_skas0 : PTRACE_SETFPREGS failed, " - "pid = %d, errno = %d\n", pid, errno); + "pid = %d, errno = %d\n", pid, -err); /* set a well known return code for detection of child write failure */ child_data->err = 12345678; @@ -362,7 +362,7 @@ int copy_context_skas0(unsigned long new_stack, int pid) pid = data->err; if(pid < 0) panic("copy_context_skas0 - stub-parent reports error %d\n", - pid); + -pid); /* Wait, until child has finished too: read child's result from * child's stack and check it. diff --git a/arch/um/os-Linux/sys-i386/registers.c b/arch/um/os-Linux/sys-i386/registers.c index 7a6f6b9..516f66d 100644 --- a/arch/um/os-Linux/sys-i386/registers.c +++ b/arch/um/os-Linux/sys-i386/registers.c @@ -104,7 +104,7 @@ void init_registers(int pid) err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); if(err) panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", - err); + errno); errno = 0; err = ptrace(PTRACE_GETFPXREGS, pid, 0, exec_fpx_regs); @@ -119,7 +119,7 @@ void init_registers(int pid) err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); if(err) panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", - err); + errno); } void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) diff --git a/arch/um/os-Linux/sys-x86_64/registers.c b/arch/um/os-Linux/sys-x86_64/registers.c index 001941f..becd898 100644 --- a/arch/um/os-Linux/sys-x86_64/registers.c +++ b/arch/um/os-Linux/sys-x86_64/registers.c @@ -62,12 +62,12 @@ void init_registers(int pid) err = ptrace(PTRACE_GETREGS, pid, 0, exec_regs); if(err) panic("check_ptrace : PTRACE_GETREGS failed, errno = %d", - err); + errno); err = ptrace(PTRACE_GETFPREGS, pid, 0, exec_fp_regs); if(err) panic("check_ptrace : PTRACE_GETFPREGS failed, errno = %d", - err); + errno); } void get_safe_registers(unsigned long *regs, unsigned long *fp_regs) diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 6f76267..280c4fb 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -81,20 +81,12 @@ void uml_idle_timer(void) set_interval(ITIMER_REAL); } -extern void ktime_get_ts(struct timespec *ts); -#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) - void time_init(void) { - struct timespec now; - if(signal(SIGVTALRM, boot_timer_handler) == SIG_ERR) panic("Couldn't set SIGVTALRM handler"); set_interval(ITIMER_VIRTUAL); - - do_posix_clock_monotonic_gettime(&now); - wall_to_monotonic.tv_sec = -now.tv_sec; - wall_to_monotonic.tv_nsec = -now.tv_nsec; + time_init_kern(); } unsigned long long os_nsecs(void) diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c index 34bfc1b..362db05 100644 --- a/arch/um/os-Linux/umid.c +++ b/arch/um/os-Linux/umid.c @@ -178,14 +178,14 @@ static void __init create_pid_file(void) fd = open(file, O_RDWR | O_CREAT | O_EXCL, 0644); if(fd < 0){ printk("Open of machine pid file \"%s\" failed: %s\n", - file, strerror(-fd)); + file, strerror(errno)); return; } snprintf(pid, sizeof(pid), "%d\n", getpid()); n = write(fd, pid, strlen(pid)); if(n != strlen(pid)) - printk("Write of pid file failed - err = %d\n", -n); + printk("Write of pid file failed - err = %d\n", errno); close(fd); } diff --git a/arch/um/os-Linux/user_syms.c b/arch/um/os-Linux/user_syms.c index 2598158..3f33165 100644 --- a/arch/um/os-Linux/user_syms.c +++ b/arch/um/os-Linux/user_syms.c @@ -96,6 +96,13 @@ EXPORT_SYMBOL_PROTO(getuid); EXPORT_SYMBOL_PROTO(fsync); EXPORT_SYMBOL_PROTO(fdatasync); +/* Export symbols used by GCC for the stack protector. */ +extern void __stack_smash_handler(void *) __attribute__((weak)); +EXPORT_SYMBOL(__stack_smash_handler); + +extern long __guard __attribute__((weak)); +EXPORT_SYMBOL(__guard); + /* * Overrides for Emacs so that we follow Linus's tabbing style. * Emacs will notice this stuff at the end of the file and automatically diff --git a/arch/um/scripts/Makefile.rules b/arch/um/scripts/Makefile.rules index 5e7a9c3..1347dc6 100644 --- a/arch/um/scripts/Makefile.rules +++ b/arch/um/scripts/Makefile.rules @@ -7,11 +7,19 @@ USER_SINGLE_OBJS := \ USER_OBJS += $(filter %_user.o,$(obj-y) $(obj-m) $(USER_SINGLE_OBJS)) USER_OBJS := $(foreach file,$(USER_OBJS),$(obj)/$(file)) -$(USER_OBJS) $(USER_OBJS:.o=.i) $(USER_OBJS:.o=.s) $(USER_OBJS:.o=.lst): \ - c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(notdir $@)) +$(USER_OBJS:.o=.%): \ + c_flags = -Wp,-MD,$(depfile) $(USER_CFLAGS) $(CFLAGS_$(*F).o) $(USER_OBJS) : CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ \ -Dunix -D__unix__ -D__$(SUBARCH)__ +# These are like USER_OBJS but filter USER_CFLAGS through unprofile instead of +# using it directly. +UNPROFILE_OBJS := $(foreach file,$(UNPROFILE_OBJS),$(obj)/$(file)) + +$(UNPROFILE_OBJS:.o=.%): \ + c_flags = -Wp,-MD,$(depfile) $(call unprofile,$(USER_CFLAGS)) $(CFLAGS_$(*F).o) +$(UNPROFILE_OBJS) : CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ \ + -Dunix -D__unix__ -D__$(SUBARCH)__ # The stubs and unmap.o can't try to call mcount or update basic block data define unprofile diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile index 98b20b7..374d61a 100644 --- a/arch/um/sys-i386/Makefile +++ b/arch/um/sys-i386/Makefile @@ -8,11 +8,16 @@ subarch-obj-y = lib/bitops.o kernel/semaphore.o subarch-obj-$(CONFIG_HIGHMEM) += mm/highmem.o subarch-obj-$(CONFIG_MODULES) += kernel/module.o -USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o stub_segv.o +USER_OBJS := bugs.o ptrace_user.o sigcontext.o fault.o -include arch/um/scripts/Makefile.rules +USER_OBJS += user-offsets.s +extra-y += user-offsets.s extra-$(CONFIG_MODE_TT) += unmap.o -$(obj)/stub_segv.o $(obj)/unmap.o: \ - _c_flags = $(call unprofile,$(CFLAGS)) +UNPROFILE_OBJS := stub_segv.o +CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) + +include arch/um/scripts/Makefile.rules + +$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS)) diff --git a/arch/um/sys-i386/syscalls.c b/arch/um/sys-i386/syscalls.c index 749dd1b..710d5fb8 100644 --- a/arch/um/sys-i386/syscalls.c +++ b/arch/um/sys-i386/syscalls.c @@ -99,11 +99,12 @@ long sys_ipc (uint call, int first, int second, switch (call) { case SEMOP: - return sys_semtimedop(first, (struct sembuf *) ptr, second, - NULL); + return sys_semtimedop(first, (struct sembuf __user *) ptr, + second, NULL); case SEMTIMEDOP: - return sys_semtimedop(first, (struct sembuf *) ptr, second, - (const struct timespec *) fifth); + return sys_semtimedop(first, (struct sembuf __user *) ptr, + second, + (const struct timespec __user *) fifth); case SEMGET: return sys_semget (first, second, third); case SEMCTL: { diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index b5fc22b..c19794d 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -16,11 +16,16 @@ subarch-obj-$(CONFIG_MODULES) += kernel/module.o ldt-y = ../sys-i386/ldt.o -USER_OBJS := ptrace_user.o sigcontext.o stub_segv.o +USER_OBJS := ptrace_user.o sigcontext.o -include arch/um/scripts/Makefile.rules +USER_OBJS += user-offsets.s +extra-y += user-offsets.s extra-$(CONFIG_MODE_TT) += unmap.o -$(obj)/stub_segv.o $(obj)/unmap.o: \ - _c_flags = $(call unprofile,$(CFLAGS)) +UNPROFILE_OBJS := stub_segv.o +CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) + +include arch/um/scripts/Makefile.rules + +$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS)) diff --git a/arch/um/sys-x86_64/signal.c b/arch/um/sys-x86_64/signal.c index a4c46a8..9edf114 100644 --- a/arch/um/sys-x86_64/signal.c +++ b/arch/um/sys-x86_64/signal.c @@ -21,7 +21,7 @@ #include "skas.h" static int copy_sc_from_user_skas(struct pt_regs *regs, - struct sigcontext *from) + struct sigcontext __user *from) { int err = 0; @@ -54,7 +54,8 @@ static int copy_sc_from_user_skas(struct pt_regs *regs, return(err); } -int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, +int copy_sc_to_user_skas(struct sigcontext __user *to, + struct _fpstate __user *to_fp, struct pt_regs *regs, unsigned long mask, unsigned long sp) { @@ -106,10 +107,11 @@ int copy_sc_to_user_skas(struct sigcontext *to, struct _fpstate *to_fp, #endif #ifdef CONFIG_MODE_TT -int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from, +int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext __user *from, int fpsize) { - struct _fpstate *to_fp, *from_fp; + struct _fpstate *to_fp; + struct _fpstate __user *from_fp; unsigned long sigs; int err; @@ -124,13 +126,14 @@ int copy_sc_from_user_tt(struct sigcontext *to, struct sigcontext *from, return(err); } -int copy_sc_to_user_tt(struct sigcontext *to, struct _fpstate *fp, +int copy_sc_to_user_tt(struct sigcontext __user *to, struct _fpstate __user *fp, struct sigcontext *from, int fpsize, unsigned long sp) { - struct _fpstate *to_fp, *from_fp; + struct _fpstate __user *to_fp; + struct _fpstate *from_fp; int err; - to_fp = (fp ? fp : (struct _fpstate *) (to + 1)); + to_fp = (fp ? fp : (struct _fpstate __user *) (to + 1)); from_fp = from->fpstate; err = copy_to_user(to, from, sizeof(*to)); /* The SP in the sigcontext is the updated one for the signal @@ -158,7 +161,8 @@ static int copy_sc_from_user(struct pt_regs *to, void __user *from) return(ret); } -static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp, +static int copy_sc_to_user(struct sigcontext __user *to, + struct _fpstate __user *fp, struct pt_regs *from, unsigned long mask, unsigned long sp) { @@ -169,7 +173,7 @@ static int copy_sc_to_user(struct sigcontext *to, struct _fpstate *fp, struct rt_sigframe { - char *pretcode; + char __user *pretcode; struct ucontext uc; struct siginfo info; }; @@ -188,7 +192,7 @@ int setup_signal_stack_si(unsigned long stack_top, int sig, frame = (struct rt_sigframe __user *) round_down(stack_top - sizeof(struct rt_sigframe), 16) - 8; - frame = (struct rt_sigframe *) ((unsigned long) frame - 128); + frame = (struct rt_sigframe __user *) ((unsigned long) frame - 128); if (!access_ok(VERIFY_WRITE, fp, sizeof(struct _fpstate))) goto out; diff --git a/arch/um/sys-x86_64/syscalls.c b/arch/um/sys-x86_64/syscalls.c index 6acee5c..6fce9f4 100644 --- a/arch/um/sys-x86_64/syscalls.c +++ b/arch/um/sys-x86_64/syscalls.c @@ -45,7 +45,7 @@ static long arch_prctl_tt(int code, unsigned long addr) case ARCH_GET_GS: ret = arch_prctl(code, (unsigned long) &tmp); if(!ret) - ret = put_user(tmp, &addr); + ret = put_user(tmp, (long __user *)addr); break; default: ret = -EINVAL; |
